Each week, Digital Spy rounds up the biggest mobile gaming releases with reviews and trailers. This week's games include an episodic stealth adventure, a speedy caped amphibian and a pill-popping musical arcade game.

Republique's second episode, titled Metamorphosis, sees the dystopian stealth series picking up shortly after the first episode's conclusion.

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While the first episode introduced players to Hope as the escapee protagonist, episode two takes a bit more of a step back to let players learn more about Republique's world and the oppressive government at the heart of it all.

The sense of setting was already one of Republique's strengths, and by focusing the story more in that direction for the second episode it adds weight to Hope's personal story and actions while making it even more satisfying to explore the environment for small hints and clues toward the bigger picture.

How you control Hope hasn't changed, though the swipes to steer security cameras and taps to direct Hope's movement are more precise, thankfully lessening the number of frustrating accidents compared to its predecessor.

The second episode does however heighten the tension by introducing new enemies with less predictable patrol patterns and armor that shields them from the limited stun weapons you can acquire.

These new guards can move very freely throughout the level, and require players to be mindful of hiding spots behind potted plants and book cases even when backtracking through previously cleared rooms.

New upgrades can be acquired to help counter-act these persistent threats, like a tool to predict patrol routes or one to see through walls, which help to even the odds in a game that was previously entirely reliant on memorising enemy patterns.

Republique Episode 2: Metamorphosis builds on the first episode's foundation for a stronger experience in every respect, with a story build up that is poised to make the wait for episode three feel even longer.

Superfrog HD brings last year's update of the classic Amiga game to iOS with mixed results.

Rather than just enhancing the original game's visuals, Superfrog HD consists of entirely new levels inspired by the original game, for an experience that both feels familiar while still offering something new and challenging for fans.

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As a bonus, all of the Amiga game's levels are also included with the new game's visual upgrade, and can be unlocked through a slot machine mini-game at the end of each of the new levels.

Superfrog HD's levels are packed with items to collect and secret passages to discover, giving players a lot to come back for as they try to earn the three star rank on each level.

However, the game's controls suffer from the shift to using virtual buttons on a touchscreen, which seem to have trouble keeping up with the speed and precision the game requires.

The compromised controls don't ruin what is still a fun game to this day, but the lack of precision certainly makes it feel like an inferior port if you have the option to get it on PS3, Vita or PC.

Intake: Be Aggressive is an arcade-style game with a dubstep soundtrack from the musically-focused developers at Cypher Prime.

The game is rather simple in theory, with players tapping pills as they fall from the top of the screen to prevent them from reaching the bottom, making sure to match the pills they tap with the colored glow of the background.

The level is constantly switching colors, so you will need to be attentive in your tapping to keep your combo going and earn valuable screen-clearing power-ups.

Intake is one of those rare instances where the iPad port exceeds the PC original, with multi-touch allowing you to clear multiple pills at once if you have the aim to pull it off, making some of the more chaotic levels far more manageable.

As you continue playing Intake you will earn in-game currency, which you can use to unlock new features and power-ups that will have a huge impact on how you play the game.

These upgrades take a long time to unlock though, which can become a painfully tedious process until you unlock an additional life to compensate for the game's intense challenge.

However, there was also a purposeful design decision behind the long unlocking process, allowing players to become skilled at the game before the next new game-changing element is introduced.

What at first appears to just be a simple score attack game of frantic tapping evolves with you the more you play it, making for an experience that could very well be prohibitively difficult to many players but rewards those who put in the time for their effort.